Research On Personalized Information Service Of Digital Library In The Cloud Computing Environment

With the development of network and information technology.The era of big datais here,information overload and the redundancy phenomenon becomes more and moreserious,which makes it difficult for users to get their real needs and informationresources they interested in.Information service model of traditional Digital Library(DL)have faced challenges,the environment of DL information resources graduallytransformed from physical space to virtual space,the existence of information resourcesalso transformed from emulation mode to digital mode.After the age of the Internet,Web era,grid era,Web2.0era,the DL has begun to enter the era of cloud computing.Incloud computing environment,how to provide personalized information service is coreof research on DL.This paper summarized the previous researches of DL,cloud computing and thepersonalized information service,then study found that some problems whichinformation service of DL faced,and the bottleneck hindering the development ofDL.Then applied the virtualization,distributed data storage,mass data processing andcloud platform and other key technology of cloud computing to build a personalizedinformation service platform of DL,last deployed the cloud service on the platform.Thispaper has carried on the following work:(1) introduce some problems existed in the key technology of cloud computing andpersonalized information service model.(2) highlights the distributed file storage,mass data processing and informationsecurity in cloud computing.(3) based on the IaaS,PaaS,SaaS three layers structure of cloud computing,wedeployed a hybrid cloud platform of personalized information service of DL.Thenconstruct the framework of personalized information service of DL under the cloud,themodel is divided into infrastructure layer,middle management layer and applicationservices layer,which corresponded to the infrastructure as a service,platform as astructure and software as a service of cloud computing.(4) on the basis of constructing a general framework,propose solutions and partialrealization of the model,virtualization solution of infrastructure layer is designed on thebasis of VMware virtualization,the middle management mainly design and implementof how to monitor the cloud platform resources and load balance control,also design thefunction module and recommended process of personalized information service.Finallyapply Jet speed and Mashup technology to realize the portal of personalized informationservice.